Nail-driving machine.



D. P. MARTIN. NAIL DRIVING MACHINE.

APPLICAHON men DEC.8. 1914'.

PatentedAug. 21,1917.

attozueq v j, T.UNITED$IATES1PATENT OFFICE.

' DUAN r; MARTIN, or PITTSBURG, KANSAS.

1 improved device with a portion of the same broken therefrom with the driving element v NAIL-DR1V11VG-MAGHINE.

To all who mat may camera.-

Be i known that I, DUANE a'citizen of the United States,vresiding at Pittsburg, in the county of Crawford and a State of Kansas, have invented certain new and useful Improvements in Nail-Driving Machinesof which the following is a specification; v a a a Q t l This invention relates to hand nailing machines, and the object of the-sameis to provide a device that willefliciently drive brads ofany slze in a structure where t s praca, tically lmpossible to usethe ordlnary hammer. 1 Another vlde a nall orbrad driving machmelthat 1S especially adapted for use with short brads Where it is desirable to drive them in corners I a hub on the opposite side thereof from that j'ofthe formation of the boss or exten sion '11. Abrad feeding slot or bore 14; is formed in the hub 10.. and an opening is as is done when bradding filletsin pattern Work.

ast'iuruahr objectetthis manta s the production of a nail-driving device that hasassociated therewithan improved means for retaining thetbrad or nail about to be tlriven in connection with the device and also retain theibrad or'nail :in a position so that :thesamewill be squarely struck by the driving element and thus securely driven into the desired object, it of course being ob' vious that when the driving element contactsfwithgthebrad or: nail thus held, the

means for retaining the brad or nail wilt automatically release the same A stillfurther objectof this invention is to provide a device of thekind above de scribed that is simplein construction and efiicient in operation, that consists; of the minimum number of parts and can therefore be manufactured and placed onthe market for the minimum' amount. a

AWith theseand other objectsin view, this invention consists of certain novel constructions, combinations and arrangement of parts, as will be hereinafter fully described and claimed. t

i In the accompanying drawings Figure 1 isa vertical sectional view of the improved device'with the driving element thereof in the positionit attains in driving a brad or nail completely from the device.

Fig. 2 is a vertical sectional view of the in a position the same assumes when the de thereby.

M Referring to the object of this invention is to pro-f l hub, and, as is clearly seen from the accomofsaid shell 15.

p Specification of Letters Patent. Patentd Aug. 21, 1917. a l np plieationfiled December 8,1914; Serial No. 876,101. d i i view of the improved brad or nail placing or retaining means used with this device.

Fig. 1- is a section taken on line H of merals,"10 designates thehub of this device having extending therefrom a boss or exten'sionll provided with screw threads, and said hub also is provided with a centrally disposed screw-threaded bore. A plunger tube12 having a portion thereof externally screw-threaded at 13 is in engagement with the hub 10 bymeans of the portion 13 thereof being threaded into the'bore in said panying drawings, a comparatively small portionof said tube 12 extends from the also provided in the tube 12 that communicates withthe slot or bore 1 1 and thus a brad inserted in the hub 10 is passed into the tube 12, and more specifically into the portion thereof that extends from the side extension 11 of the hub 10, and adjacent the opposite end of saidshell 15 from that of its connection with the boss or extension 11,

are braces 16 that engage the plunger tube 12 and rigid y parts by reference nuretain the tube 12 centrally Apluiiger 17 is slidable in the plunger j tube 12 and terminates in one endfin a nail driver or engaging portion 18, and the oppo S1136 end of the plunger 17 from that of the :formation of the nail-engaging portion 18 is an enlarged head 19 that terminates in a screw-threaded shank 20. Slidable on the inner shell 15 is an outer shell 21 having at one end thereof a knob or hand-engaging portion 22, said knob or hand-engaging por tion 22 provided with a centrally disposed cavity 23, into which the threaded shank 20 of the flange 17 is threaded, thus rigidly securing the plunger 17 to the knob or handengagingelement 22 and when movement is imparted to the knob 22 and of course the shell 21, said plunger 17 will move therer with. A spring 241 is secured to the knob 22 andthe hub 10, and normally retains the v readily drive the nail thus admitted.

Improved means is provided with this device whereby brads or nails fed as above described to the tubeare retained in the path of the driving element, and this device comprises a housing or casing 25 made preferably of, spring steel having at one end'there of acollar or flange 26 disposed at an angle ,to the main portion of the housing or cas- .,ing 2.5v and through which securing means 27 passes to rigidly secu're the housing or casing 25 to the hub 10, Adjacent the end of the tube-12,-the said casing or housing .25 is reduced so as to form a nail seat '28 I and extending from this seat 28 is a substantially conesshaped guard 29,- It will thus ;:be seen that a bradornail fedthrough the slotor bore :14 into the tube 12 will pass .intothe guard 29, the head of the brad or nail will retain the nail or brad as shown in Fig.2, in that the same will engage and rest on the 1 seat 28. The guard 29 being formed vofspringsteel and split sufliciently to, allow the ,headfof the brad held thereinrto pass over the seat' 28 whenithe striking element comes in contact thereivitlnit will be readily seen that the brad or nail can be efficiently driven into; the desired object.

Itis obvious that minor changes may be a made in the form and construction of this invention Without, departingfrom the materiaLpartsthereof. It is therefore notwished' to confine the invention to the exact-form ;to include all such asiproperly, come within the scope oftheclaims.

herein shown and described, but itis wished a 1. ,Ina nail driving machine, a hub having a centrally disposed bore, atube having a portion thereof in said bore and extending v on eachsideot said hub, aplunger slidable in said tube, V means for guiding nails ,into said, tube, a housing on said hub and project ranged to cover the portion ofsaid tube extending from one side of said hub, a reduced neck portion of said housing providing a seat to hold a nail positioned in the path of said sliding plunger, as and for the purpose set forth;

3. In a nail driving machine, a hub having acentrally disposed bore formed therethrough, an extension on one side of said hub,a'tube having a portion thereofposi- 'tioned in said bore and extending from both sldes of said hub, an lnner shell secured to said extension on said hub, an outer shell slidable on saidinner shell', a plunger in said tube and connected with said outer shell, means for guiding nails to said hub and into a portion of said tube, and means for retaining a nail in the path of said plunger, whereby when said outer shell is moved relative to said inner shell, said plunger will engage the said nail, as'and for the'purpose set forth' I 4. In a nail driving machine, a hub, a tube passing through said hub, a plunger slidable in 'said tube, nieansflfor guiding nails through saidhub and into said tube, housing on said hub extending over the portion ,of said tube into which said nails, are guided, a neck portlon on said housingproviding a seat for a nail, and a guard extending from said neck, said guard being split so as to yield and permit the nails to be driven from said seat andthrough' said guard.

In testimony whereof I affix my signature in presence of two witnesses.

i DUANE P. MARTIN. Witnesses: T

JOHN SHA'rz, CROSBY MARTIN.

Q p iesof tni s patcnt may be obtained for five cents each, by addressing th e Commissioner of Patents,

' Washington, D. G. H 

